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Objective Psoriatic arthritis (PsA) is characterized by varied radiographic features. We describe a patient with PsA with severe radiographic damage that improved significantly following treatment with etanercept. The improvement was documented by several methods of radiographic assessment.
Methods Etanercept was introduced in September 2005. Radiographs of the hands and feet were read using 3 methods: the modified Steinbrocker method, the van der Heijde (vdH) modification of the Sharp method, and the Ratingen scoring system.
Results In July 2009, radiographs of the hands and feet showed improvement in erosion score and joint space narrowing, while bony proliferation remained the same [43 by modified Steinbrocker, 26 by the vdH Sharp score (12 for erosions and 14 for joint space narrowing), and 56 by the Ratingen (18 for erosion and 38 for proliferation].
Conclusion The 3 radiographic methods were useful in demonstrating improvement in joint scores. The modified Steinbrocker method, which is the simplest, was able to reveal improvement in our patient.